Summary

This security update resolves a vulnerability in Windows that could allow elevation of privilege if an attacker inserts a malicious USB device into a target system. An attacker could then write a malicious binary to disk and execute the code.

If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

More Information

Known issues in this security update

After you install this security update on a computer that is running Windows 7 or Windows Server 2008 R2, you may receive an error message when you try to save a recording by using the Problem Steps Recorder. To resolve this issue, install the following update:

How to obtain and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, seeGet security updates automatically.

Note For Windows RT and Windows RT 8.1, this update is available through Windows Update only.

More Information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

Windows Vista and Windows Server 2008 file information

The files that apply to a specific product, milestone (SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

Version

Product

Milestone

Service branch

6.0.6002.18xxx

Windows Vista SP2 and Windows Server 2008 SP2

SP2

GDR

6.0.6002.23xxx

Windows Vista SP2 and Windows Server 2008 SP2

SP2

LDR

GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

For all supported x86-based versions of Windows Vista and Windows Server 2008

File name

File version

File size

Date

Time

Platform

Csrsrv.dll

6.0.6002.19454

49,664

21-Jul-2015

16:03

x86

Csrsrv.dll

6.0.6002.23762

49,664

21-Jul-2015

15:30

x86

Emdmgmt.dll

6.0.6002.19454

564,224

21-Jul-2015

16:03

x86

Emdperf.h

Not applicable

924

18-Sep-2006

21:46

Not applicable

Emdperf.ini

Not applicable

5,100

18-Sep-2006

21:46

Not applicable

Emdmgmt.dll

6.0.6002.23762

564,224

21-Jul-2015

15:30

x86

Emdperf.h

Not applicable

924

07-May-2014

23:55

Not applicable

Emdperf.ini

Not applicable

5,100

07-May-2014

23:55

Not applicable

Ecache.sys

6.0.6002.19454

140,224

21-Jul-2015

16:07

x86

Ecache.sys

6.0.6002.23762

140,224

21-Jul-2015

15:41

x86

Mountmgr.sys

6.0.6002.19454

56,256

21-Jul-2015

16:07

x86

Msmmsp.dll

6.0.6002.19454

10,752

21-Jul-2015

16:03

x86

Mountmgr.sys

6.0.6002.23762

56,256

21-Jul-2015

15:41

x86

Msmmsp.dll

6.0.6002.23762

10,752

21-Jul-2015

15:31

x86

Ntdll.dll

6.0.6002.19454

1,206,192

21-Jul-2015

20:55

x86

Ntdll.dll

6.0.6002.23762

1,207,240

21-Jul-2015

20:55

x86

Ntkrnlpa.exe

6.0.6002.19454

3,605,440

21-Jul-2015

16:07

Not applicable

Ntoskrnl.exe

6.0.6002.19454

3,553,216

21-Jul-2015

16:07

Not applicable

Ntkrnlpa.exe

6.0.6002.23762

3,609,024

21-Jul-2015

15:41

Not applicable

Ntoskrnl.exe

6.0.6002.23762

3,556,800

21-Jul-2015

15:41

Not applicable

Smss.exe

6.0.6002.19279

64,000

09-Jan-2015

00:18

x86

Smss.exe

6.0.6002.23762

64,512

21-Jul-2015

14:15

x86

For all supported x64-based versions of Windows Vista and Windows Server 2008